<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>canvas匀速直线运动</title>
    <link rel="stylesheet" type="text/css" href="style.css">
</head>
<body>
    <canvas id="canvas">你的浏览器不支持canvas，请跟换其他浏览器试一试</canvas>
    <script type="text/javascript" src="script.js"></script>
</body>
</html>